Drainage system and fitting therefor



Jan. 2, 1934 E. W. N. BOOSEY DRAINAGE SYSTEM AND FITTING THEREFOR FiledNov. 4, 1929 2 Sheets-Sheet l BY@ 5% f A TTORN Y.

Jan. 2, 1934.

E. w. N. BOOSEY 1,941,926 I DRAINAGE SYSTEM AND FITTING THEREFOR FildNov. 4, 1929 2 Sheets-Sheet 2 1 N V [N TOR. :ZZda/ard M M Boos 9 B YPatented Jan. 2, 1934 UNITED STATES DRAINAGE SYSTEM AND FITTING THEREFOREdward w. N. Boosey, Detroit, Mich. ApplicationNovember 4, 1929. SerialNo. 404,566

5 Claims. (Cl. 4-211) This invention relates to drainage systems andfittings therefor, and the object is to provide a new system of drainagediffering from previous systems principally in the manner of ventingconnected fixtures to atmosphere for which purpose a new and uniquefitting is utilized which discharges to the waste stack at one end andto a vent stack at the other and to which the usual bath tub, wash basinand closet of a bath room directly discharge.

The purpose of the invention therefore is to provide a system utilizingsuch fitting to avoid the discharge of waste water from fixtures in anupper story of a building through similar fittings in the floors below.Previous to my invention the bath room fittings all discharged into afitting which formed a section of the main waste stack and consequentlythe flush water from all toilets above any particular fitting passedthrough the said fitting tending to siphon the traps connected with thefixtures of the lower bath rooms and this was true even though a ventline was provided for the fixtures of the bath room.

By my new system and through utilization of a peculiar form of fitting,each fitting is individual to the fixtures of a single bath room and noflush water from any other fixtures may pass therethrough and eachfitting is individually vented to a main of such ample dimension thatcontinual fiow of flush water in the main waste stack cannot siphon thefixtures connected with any one of the fittings.

Afurther object of the invention is to provide a fitting for the purposestated which is in the nature of a sanitary T having a side branch of Yform to which the closet discharges and having hubs on opposite sidesfor connection of other fixtures such as a bath tub and wash tub andwash basin and separately venting the Y branch at its upper side to theupper end of the fitting which is directly connected to the vent main.By a construction of this character I am enabled to provide a drainagesystem with separate waste and vent mains wherein the flush water fromany toilet of an upper fioor does not pass through the fitting to whichthe fixtures of a toilet room below discharges and therefore avoids thedifficulties now encountered in buildings having several floors as forinstance oflice buildings in which there is practically a continuousdischarge of flush water through the main waste stack.

These general objects and the several novel features of the inventionand the specific fitting permitting use of the system are hereinaftermore specifically described and claimed, and the preferred form ofconstruction of a system and fitting embodying my invention is shown inthe accompanying drawings in which Fig. 1 is a View practicallydiagrammatic in form showing my improved drainage system.

Fig. 2 is a front elevation of the Y branched T utilized in theinstallation of the system. Fig. 3 is a section taken on line 33 of Fig.2.

Fig. 4 is a section taken on line 44 oi Fig. 2.

In Fig. 1 I have shown the preferred form of installation of my newsystem which, as will be readily understood, may vary somewhat inspecific arrangement and relationship of the conduits as may be requiredin installing the same in any particular building without altering thefunctioning of the parts or the cooperative relationship thereof. InFig. 1 is indicated the usual waste stack '1 to which all fixturesdischarge and with my new system I provide a fitting 2 in the main stackhaving a side hub 3 for reception of a discharge pipe 4 connected to thebottom of my special fitting '5 as is hereinafter described more indetail. This fitting is of the form of sanitary T having what may betermed a Y branch 14 to which the closet bend indicated at 11discharges. The fitting 5 is also provided with hubs with which theconduits 6 and '7 leading to other fixtures of a bath room alsodischarge. The upper end of the fitting 5 is connected by means of aconduit 8, of practically the same internal diameter as the fitting 5,directly to a vent stack 9. It will be observed that in each floor thefitting 5 is independently connected to a vent stack'and is alsoindependently connected to the waste stack and as the bath room fittingseach discharge to this special fitting 5 there is free flow of air fromthe line 8 through the fitting 5 to the waste stack 1. Thus there is nopossibility of siphoning the traps of any of the fixtures of thebathrooms connected to the waste stack as no fitting 5 receives flushwater from any fitting thereabove.

As has been the practice heretofore the fitting to which the closetdirectly discharged formed part of the waste stack and flush water fromtoilet rooms on upper floors discharging simultaneously to the wastestack caused fixtures of the toilet rooms toward the bottom of the stackto be siphoned as the small vent lines with which the closet bend isusually provided were insufficient to prevent siphonage under suchconditions.

To enable the proper installation of this "peculiar drainage system Ihaveprovided a fitting of special form shown more clearly in Figs. 2 to4. As will be observed more particularly in Fig. 3, the side hub 10approaches the main portion of the body of a fitting as a Y branch 14and the closet bends or discharge line from the toilet indicated at 11is secured to this hub 10. From the top side of this Y like branch 1form an independent conduit 12 extending upwardly and opening near theupper end of the main body of the fitting at 13 considerably above thepoint of union of the Y branch 14 with the body.

It will be noted that the discharge water from the conduit or closetbend 11 is deflected downwardly immediately it enters the Y branch andthat the pull of the flushing water is greatest at the high point justas the water enters the branch. Therefore, the vent conduit 12 for thisY branch opens thereto at this particular point. The suction istherefore relieved and this particular vent conduit 12 maybecomparatively small in diameter as its only purpose is to relieve thesuction produced by waste flow from a single toilet fixture.

Above this line of flow through the Y branch 14 the main or verticallypositioned portion of the body of this special fitting is formed withside hubs 15 and 16 here shown as entering at an angleat opposite sidesof the body as will be understood from Figs. 1 and 4 and shown as beingthreaded for introduction of the discharge conduit from a bath tub,urinal .or wash basin as the case may be. It is further to be noted thatthese hubs are so arranged that the connection of waste conduits of thewash basin or tub are at one side of any flow through the body of thefitting 5 as the hubs provide small side chambers 1'7 and 18 as shown inFig. 3. The center line of these hub members 15and 16 is belowthe-center line of connection of the vent line 12 of the body and abovethe line of flow of the main body of water through the Y branch 14. Asthe upper end of the fitting 5 is directly connected by a line 8 with avent of the full diameter of the fitting 5, these fixtures whosedischarge lines are connected with these hubs 15 and 16 are directlyvented through the upper end of the fitting and the line 8 to the mainvent stack 9. 4' I The vent stack, as shown in Fig. 1, is connected atthe bottom with the main waste stack and at the top above any fixturedischarging to the waste stack 1 which is the preferred arrangement ofthe conduits.

Other arrangements of vent stacks may be made; however, but in allarrangements an essential feature exists in providing a cross conduitfrom the waste stack to the vent stack in which cross conduit isarranged a fitting to which the fixtures discharge substantially in themanner hereinbefore described whereby the flush Water from any set offixtures cannot pass through the fitting to which fixtures of lowerfloors are connected. It is to be understood, however, that variousalterations may be made in the construction and arrangement of partswithout departing from the spirit and scope of the invention asset forthin the appended claims.

Having thus fully described my invention what I claim and desire tosecure by Letters Patent of the United States is- 1. A drainage systemcomprising a waste stack, a vent stack, a. fitting to which fixturesdischarge waste water, a conduit connecting the bottom end of thefitting to the waste stack, and a conduit of the same general diameteras the fitting connecting the upper end thereof to the vent stack, saidfitting including a side branch of the same general diameter as the bodyof the fitting and having a vent conduit opening at one end to the upperside of the branch and at its other 4 end to the upper end of the body,and side projections extending beyond the general internal diameter ofthe body for connecting discharge conduits of other fixtures, the saidlast named connections being formed in the body of the fitting above theline of fiow through the side branch.

2. A drainage system for a series of fixtures discharging thereinto atpoints one above another which comprises a main waste stack, a ventstack opening to the waste stack above the point of connection of anydischarge line thereto at the top and connected with the waste stack atthe bottom below the point of the discharge of any fixture thereto, across conduit between the waste stack and the vent stack, a fittingarranged in substantially vertical position intermediate the ends of thecross conduit and having a side branch for the connection of a-closetbend, the said branch being in theform of a Y to deflect the dischargewater downwardly in thesaid fitting, a vent conduit opening at one endto the top of the said side branch and at its other end to the upper endof the fitting, and additional openings for discharge lines of fixturesopening directly to the body above the line of flow through the saidbranch. p

3. In a drainage system, a fitting for the connection of thedischarge-lines of several fixtures thereinto, consisting ofa memberadapted for connection in a conduit in substantiallyvertical positionand having a side branch for the discharge conduit of a fixture, saidbranch approaching the body of the fitting at an angle downwardly fromthe inlet, avent conduit at the top of the branch opening adjacent thetop of the body of the fitting, and side branchesfor connection ofdischarge lines of additional fixtures below the pointof entrance of thesaid vent conduit to the body and above the line of flow through thebranch, said fittingbeing connected at its bottom end to a wasteconduit-and at its upperend to aventconduit.

4. In a drainage system, a fitting comprising a body, the lower end ofwhich is directly connected with a waste conduit and the upper end ofwhich is directly connected with a vent stack, said body having a sidebranch formed to direct flow there'- through downwardly into the bodyof, the fitting, hub portions forming side extensions each at one sideof possible fiow through thebddy. and. adapted for attachment of thedischarge linesof other fixtures, the fitting provided with a ventconduit opening at one end to the upper side of the branch and at itsother end to the upper end of the body thesaid hub portions opening tothe body above the line of fiow through the branch and by reason ofconnection of the upper end of the fitting to a vent stack uninfiue'ncedby suction produced by. flow through the branch.

5. A drainage system comprising in combina+ tion a waste stack, aventstack, a fitting to which the discharge conduits of several fixturesare connected, the said fitting discharging at its bottom end to thewaste stack and having its upper end directly connected to the ventstack, the said fitting having an enlargement on one side open to thebody and separately in'connection with the vented end of the fitting bymeans of the vent conduit, the discharge conduits of the fixtures beingconnected to the said enlarged side of the body thereof in communicationwithsaid vent conduit whereby each discharge conduit is vented throughthe top ofthe.fitting. q EDWARD N. BOOSEY.

